Hi g86,
Next time, I will read the link a little bit more carefully... sorry
The idea with an E-shaped patch is good, but in my reality (using a
substrate with a high er) it doesn't work. I can increase the bandwith
from about 5MHz to 10MHz, and this is not enough. The advantage is
the (nearly) unchanged antenna-gain.
The best solution for my problem seems to be a resistor-loaded patch.
I can 'choose' my bandwith, but the gain is significant lower - that's life.
Thanks